SODIUM AND LEAD TECHNOLOGIES

The term coolant technology means a complex of methods and means assuring operation of facility under rated conditions and possible abnormal conditions. The main tasks related to coolant technology are as follows  

Analysis of impurities condition, their sources and accumulation rate in the circuit  

Development of methods and equipment for keeping impurity content in the coolant within acceptable limits  

Analysis of different operating procedures and evaluation of related impurities input  

The main elementary corrosion processes in the liquid metal are as follows  

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In order to predict the direction of corrosion and mass transfer, it is essential to have data on thermodynamic properties of chemical compositions and steel components as a function of temperature. If the liquid metal is flowing at high velocity, the material is subject to erosion. Formation of the film (consisting of both steel and liquid metal coolant components) on the structural metal surface is another type of corrosion, since this is not protective film. Due to the difference in chemical activity between sodium and lead, technologies of these coolants are quite different, although some methods share a number of common features. 

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